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I'm going to get some of these lock nuts. Anyone use these, as opposed to the nylon lock nuts? I have a question. Do they damage the bolt you use them on? I know these nuts are one time use only, but do they make the bolt one time use only also?

A good source for metric fasteners and similar things

Originally Posted by okieflats

I'm going to get some of these lock nuts. Anyone use these, as opposed to the nylon lock nuts? I have a question. Do they damage the bolt you use them on? I know these nuts are one time use only, but do they make the bolt one time use only also?

There are some stover or elliptical lock nuts that are reusable multiple times. I think the BMW elliptical nuts are since they are grade 8 and zinc coated. They are great for high temp or high vibration spots. But they can strip coatings from the stud.

Another Bel-Metric fan here too! So many engineering and racing teams use them. Tony in sales is/was a BMW fan. I almost bought a E30 323i from him.

I am going to convert my Alfa oil pan from bolts to studs, and use the stover locknuts on the studs to hold the pan on. This is because oil leaks out through the bolt holes. With studs you will be able to squirt some silicone sealer in the hole before putting the washer and locknut on to hopefully prevent the leaks. Would not want to use a regular nut for that as it would probably come loose.

I am going to convert my Alfa oil pan from bolts to studs, and use the stover locknuts on the studs to hold the pan on. This is because oil leaks out through the bolt holes. With studs you will be able to squirt some silicone sealer in the hole before putting the washer and locknut on to hopefully prevent the leaks. Would not want to use a regular nut for that as it would probably come loose.

Okie,

In that application you might want to use Curil T on the threads rather than silicone since it stays flexible and doesn't really cure. I placed some on my exhaust studs where they entered the head to prevent seepage and it has worked well so far...though admittedly it is still a young build.